JPH0722415Y2 - System ceiling bar connection - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a bar material connecting member for a system ceiling, and in particular, a bar material having concave grooves formed on upper and lower side surfaces is assembled so as to cross each other. The present invention relates to a connector for connecting the intersecting portions to form a bar material in a frame.

[Conventional technology]

When forming a system ceiling, bar members held on the ceiling base by hanging metal fittings are assembled in a grid pattern, each crossing part is fixed with a connecting tool to form a frame, and then a lighting fixture is attached to this or ceiling board. Will be placed.

BACKGROUND ART Conventionally, as a connecting tool for connecting bar members assembled in a lattice shape, for example, one shown in FIG. 1 is known (see Japanese Utility Model Publication No. 50-34805). This connector 1 is inserted into the vertical groove 3a, 3b facing each other formed on the side surface of each bar material 2a, 2b when the end surface of the other bar material 2b is abutted against the side surface of one bar material 2a. Then, the two bar members 2a and 2b are connected to each other, and a half piece 4 having a dogleg-shaped bulging portion 5 projecting from one end surface thereof and an opening 6 formed by the bulging portion 5 are formed. Is formed in an L shape with the half piece 7 having the inclined hole 8 communicating with each other,
Further, an inclined narrow portion 9 is formed on the upper portion of the half piece 7.

When the bar members 2a and 2b are connected using this connecting tool 1, first, one half piece 4 is inserted into the groove 3a of the bar material 2a, and then the other half piece 4b is connected. After inserting into the groove 3 and abutting the end surface of the bar material 2b so as to be orthogonal to the side surface of the bar material 2a, the bulging portion 5 is pushed out by using a tool such as a Yatco 10, and the upper end portion of the half piece 4 is extended. The narrow portion 9 of the other half piece 7 is deformed upward by fitting the upper groove 3a of the bar member 2a, and the upper portion of the narrow portion 9 is recessed by the groove of the bar member 2b. The bar members 2a and 2b are connected to each other by being fitted into the bar member 3.

[Problems to be solved by the device]

However, in the above-mentioned conventional coupling member 1, since the narrow portion 9 of the other half piece 7 is deformed by the pressing deformation of the bulging portion 5 formed on the one half piece 4, the pressing force is sufficient. If it is not transmitted or the bulging portion 5 is crushed without being sufficiently stretched, there is a risk that the concave groove 3b is not pressure-contacted by the narrow portion 9 reliably.

Therefore, the technical problem of the present invention is to surely connect both bar members by a simple means.

[Means for Solving the Problems]

In order to solve the above-mentioned technical problems, the present invention assembles bar members having concave grooves formed on upper and lower side surfaces so as to intersect each other, and connects the intersecting portions to form a bar member in a frame. In the connecting tool, the L-shaped connecting plate fitted between the recesses along the respective side surfaces of the intersecting bar members, and the corner portions of the connecting plate are sandwiched from above and below, and the bolt insertion hole is formed. And a nut inserted into the upper and lower bolt insertion holes of the locking piece, and a nut screwed to the tip of the bolt. A bar material connector for a system ceiling, characterized in that a central kerf portion including a corner portion and both side kerf portions are formed in a slit shape along a substantially central portion through a supporting portion connecting the upper and lower portions of a connecting plate. I am trying.

[Action]

According to the above means, when the bolt is tightened, the corners of the connecting plate are pressed and contracted from the up and down direction by the locking pieces, and both ends of the connecting plate spread in the up and down direction with the supporting portion as a fulcrum to press the concave groove. Then, the bar material can be fixed.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 show a first embodiment of a connector according to the present invention. The connecting tool 11 includes a connecting plate 12 formed in a substantially L shape, a pair of locking pieces 14a and 14b for sandwiching a corner portion 13 of the connecting plate 12 from above and below, and the locking pieces 14a and 14b. It is composed of a bolt 15 to be connected, and a nut 16 screwed to the tip of the bolt 15.

The connecting plate 12 is formed by a pair of blade pieces 12a, 12b inserted into concave grooves 18a, 18b formed so as to face each other vertically on each side surface of the bar material 17a, 17b, these blade pieces 12
A central kerf 19 including both corners 13 and both side kerfs 20a, 20b are provided in a and 12b along the substantially central portion in the vertical direction. The central kerf 19 and the both-side kerfs 20 are both formed in a slit shape, and are partitioned by the supporting portions 21a and 21b connecting the upper and lower sides of the blade pieces 12a and 12b. Further, the upper and lower edges of each wing piece 12a, 12b are slightly tapered toward the tip end, and pressing pieces 22a, 22b protruding in the vertical direction are formed at the tip end thereof. Further, the corner portion 13 of the connecting piece 12 according to this embodiment, each wing piece 12a,
The abutting portions of 12b are bent inward toward each other in a hook shape, and the upper and lower ends of the bent corner portion 13 are slightly narrower than the side portions of the blades 12a, 12b. Has been formed.

On the other hand, the locking pieces 14a, 14b are flat plates having orthogonal flanges 23a, 23b that engage the corners 13 of the connecting plate 12, and insertion holes 24a, 24b for inserting the bolts 15 in the center of the flat plates. Has been established. The nut 16 screwed onto the tip of the bolt 15 is welded to the lower surface of the one locking piece 14b.

Therefore, when connecting the bar members 17a and 17b using the connecting tool 11 having such a structure, as shown in FIG.
First, the connecting tool 11 is assembled in advance, and one wing piece 12a is inserted into the vertical groove 18a of the bar member 17a to be connected. Next, the other blade 12b is also inserted into the vertical groove 18b of the bar material 17b to be connected, and the end surface of the bar material 17b is brought into contact with the side surface of the bar material 17a. At this time, since the corner portion 13 of the connecting plate 12 projects outward from the concave grooves 18a and 18b of the bar member 17a and the bar member 17b, there is no risk that the locking pieces 14a and 14b interfere with the bar members 17a and 17b. .

Next, when the head of the bolt 15 is turned with a screwdriver and tightened to the nut 16, the upper and lower locking pieces 14a, 14b press and shrink the vicinity of the corner 13 of the connecting plate 12 from the vertical direction, and the central kerf 19
Becomes narrower. Therefore, the left and right wing pieces 12a, 12b are
Both side cut groove portions 20a, 20b spread in the vertical direction with a and 21b as fulcrums, and the pressing pieces 22a, 22b press the concave grooves 18a, 18b of the bar members 17a, 17b under pressure. As a result, both of the bar members 17a and 17b are fixed at the same time, and the pressing means 22a and 22b firmly bite into the recessed grooves 18a and 18b, so that the bar members 17a and 17b are securely fixed. In this embodiment, the side surface on the opposite side of the bar member 17b can also be connected by the same means as described above.

FIGS. 4 to 6 show a second embodiment of the connector, in which both side surfaces of the bar member 17b can be connected by one connector 26. As shown in FIG. That is, in this embodiment, the corner portions 13 of the connecting plate 12 are provided to be inclined, and the connecting plates 12 and 12 are
Is inserted into the concave grooves 18a, 18b on both sides of the bar material 17b, a triangular space 27 is formed between the corners 13, 13 of the two so that the bolt 15 can be inserted into the space 27. There is. Further, the locking pieces 28a, 28b have a shape corresponding to the inclination of the corner portion 13 of the connecting plate 12, and are engaged in a state of straddling the corner portions 13, 13 of both connecting plates 12, 12. C-shaped flanges 29a and 29b.

Therefore, when connecting the bar members 17a, 17b using such a connecting tool 26, the locking pieces 28a, 28b are provided between the two connecting plates 12, 12 arranged at the predetermined positions as described above. By straddling and tightening the upper and lower locking pieces 28a, 28b with bolts 15,
Both sides of the bar material 17b can be fixed at the same time.

FIGS. 7 to 10 show a third embodiment of the connector, which is capable of simultaneously connecting four bar members 17a, 17b, 17c, 17d intersecting at one point. That is, the connector 30 has a cross shape in which the above-mentioned four connecting plates 12 are back-to-back, and the center portion thereof is the bolt 31 with holes and the locking pieces 32a, 32b.
It is designed to be connected by. Locking pieces 32a, 32
The b has flanges 33a and 33b on four sides that engage with the corners 13 of each connecting plate 12, and the nut 16 is welded to the lower surface of one locking piece 32b. The corner portion 13 of the connecting plate 12 has a slightly rounded shape, and when four connecting plates 12 are back-to-back, an insertion hole for the bolt 31 with a hole is formed in the center thereof. . Further, in this embodiment, bar members 17a, 17b, 17c, 17
A void 34 is formed at the intersection of d, which can be seen from the lower side, but the void 34 can be hidden by using a rectangular closing plate 35 as shown in FIG. The closing plate 35 can be attached by sandwiching the tongue piece 36 provided on the upper surface thereof between the central vertical walls of the bar members 17a and 17c.

Therefore, in the case of connecting the intersecting portions of the four bar members 17a, 17b, 17c, 17d using the connecting tool 30 having such a configuration, the connecting tool 30 is previously assembled in the same manner as described above. ,
Bar members 17a, 17b, 1 are attached to the blades 12a, 12b of each connecting plate 12 from four directions.
The upper and lower concave grooves 18a, 18b, 18c, 18d of 7c, 17d are inserted. At this time, since each bar material is inserted between the two overlapping blade pieces, the blade pieces of the adjacent connecting plates are fitted into the concave grooves formed on both side surfaces of the bar material one by one. Become. Next, when the wrench is fitted into the hexagonal hole 37 of the holed bolt 31 and turned in the tightening direction, the locking pieces 32a, 32b simultaneously press the corners 13 of the connecting plates 12 from the vertical direction in the same manner as described above, and the central kerf 19
The wing pieces 12a, 12b on both sides of the kerf 20
a, 20b simultaneously spread in four directions, and the pressing pieces 22a, 22b are pressed against the respective concave grooves 18a, 18b so that the four bar members 17a, 17b, 1
7c and 17d can be connected at the same time. Finally, the closing plate 35 is fitted from the lower side of the intersecting portion to hide the gap 34.

11 and 12 show a fourth embodiment of the connector 38 according to the present invention, in which the bolt shaft 39 and the closing plate 35 are integrally formed. That is, there is a gap at the lower end of the bolt shaft 39.
While fixing the closing plate 35 that hides 34, the locking pieces 32a, 32b that engage with the upper and lower ends of the connecting plate 12 are inserted in the bolt shaft 39, and the wing nut 40 is further attached to the upper end of the bolt shaft 39. It is screwed. Then, by fixing the lower locking piece 32b to the bolt shaft 39 at a predetermined position for engaging the connecting plate 12, the locking pieces 32a, 32b are connected to the connecting plate 12a when the wing nut 40 is tightened. Press near the center of 12b, and cut it on both sides in the same way as above.
b expands and simultaneously connects the bar members 17a, 17b, 17c, 17d.

As described above, in this embodiment, since the closing plate 35 is formed integrally with the bolt shaft 39, the work of mounting the closing plate 35 can be omitted, and a reliable attachment can be obtained. Further, since the wing nut 40 can be manually attached by turning, it is not necessary to use a tool.

FIG. 13 shows a fifth embodiment of the connector according to the present invention. This connecting tool 41 integrally forms a lower locking piece 32b that engages with the lower corner portion 13 of the connecting plate 12 and a closing plate 35, and provides a cylindrical body 42 through which the bolt 15 is inserted, and an upper locking. Piece 32a
The nut 16 is welded to. Therefore, in this embodiment, the bolt 15 is inserted from the lower side of the closing plate 35 and fixed to the upper nut 16, and the split groove 43 provided at the tip of the bolt 15 is further rotated by a screwdriver or the like to rotate the nut. 16 is tightened, and the corners 13 of the connecting plate 12 are compressed by the upper and lower locking pieces 32a, 32b.

FIG. 14 shows a sixth embodiment of the connector according to the present invention. This connecting member 44 is different from the fifth embodiment in that the bolt 15
The direction is reversed so that it can be operated from below. That is, in this embodiment, the closing plate 35 and the lower locking piece 32
A female screw portion is provided on the inner peripheral surface of the cylindrical body 42 that connects with b, and the bolt 15 inserted from above is screwed into this and the bolt 15
The split groove 43 provided at the tip of the is adjustable.

FIG. 15 shows a seventh embodiment of the connector according to the present invention. In the connector 45 according to this embodiment, the closing plate 46 is provided with a downward recess 47, and the head of the bolt 15 is recessed in the recess 47 via the spring 48, and the nut 16 is inserted in the male screw end of the recess 15. Are screwed together. Note that reference numerals 32a, 32
Reference numeral b denotes upper and lower locking pieces of the connecting plate 12. Therefore, in this embodiment, since the spring 48 is interposed between the bolt 15 and the closing plate 46, when the nut 16 is tightened, the spring 48 is
Acts as a cushioning material, and the lower end portion of the bar material 17 by the closing plate 46
The deformation of 49 can be effectively prevented.

In addition, in each of the above-described embodiments, the case where the pair of locking pieces are arranged at the upper and lower ends of the connecting plate has been described, but it is possible to omit one of the locking pieces by using the nut as one. .

[Effects] As described above, according to the connector of the present invention, a force is applied to one end of the wing piece by using the supporting portions provided on the left and right wing pieces of the connecting plate as fulcrums, and the force is applied to the wing piece. Since it is transmitted to the other end and the other end is pressed into contact with the concave groove of the bar member, the force is sufficiently transmitted to the other end and the bar member can be surely connected. In addition, since the central corner of the L-shaped connecting plate is pressed and contracted, both ends of the blade are spread and pressed against both bar members to be connected, so that both bar members are It has the effect of being fixed at the same time.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a connector showing a first embodiment of the present invention, FIG. 2 is a perspective view showing a bar member connecting means using the above connector, and FIG. 3 is III- in FIG. III sectional view, 4th
FIG. 5 is a perspective view of a connector showing a second embodiment of the present invention, FIG. 5 is a plan view of FIG. 4, FIG. 6 is a sectional view taken along line VI-VI in FIG.
FIG. 7 is a perspective view of a connector showing a third embodiment of the present invention, FIG. 8 is a perspective view of a closing plate, and FIG. 9 is a perspective view showing a bar member connecting means using the connector. Figure 10 is X- in Figure 9.
X-ray sectional view, FIG. 11 is a perspective view showing a fourth embodiment of the present invention, FIG. 12 is a sectional view taken along line XII-XII in FIG. 11, and FIG. 13 is a connection showing a fifth embodiment of the present invention. FIG. 14 is a sectional view of a connector showing a sixth embodiment of the present invention, FIG. 15 is a sectional view of a connector showing a seventh embodiment of the present invention, and FIG. 16 is a conventional connection. It is a perspective view which shows the connection means of the bar material using a tool. 11,26,30,38,41,44,45… Coupling 12… Coupling plate 12a, 12b… Wing piece 13… Corner 14a, 14b, 28a, 28b, 32a, 32b… Locking piece 15… Bolt 16… Nuts 17a, 17b, 17c, 17d… Bar materials 18a, 18b, 18c, 18d… Grooves 19… Central kerfs 20a, 20b… Both side kerfs 21a, 21b… Support 24… Insert hole 31… Bolts with holes 34… Void 35,46 ... Blocking plate 39 ... Bolt shaft 40 ... Wing nut

Claims (2)

[Scope of utility model registration request] 1. A connecting member for assembling bar members having concave grooves formed on upper and lower side surfaces so as to intersect each other, and connecting the intersecting portions to form a bar member in a frame structure. L-shaped connecting plates that are inserted between the concave grooves along the respective side surfaces of the, and locking pieces that sandwich the corners of the connecting plates from above and below and that have bolt insertion holes, and this locking The bolt is inserted into the upper and lower bolt insertion holes of the piece, and the nut is screwed to the tip of the bolt, and the connecting plate includes a corner along the substantially vertical center. The central kerf and both side kerfs are formed in a slit shape through the support part that connects the upper and lower sides of the connecting plate, and when the bolts are tightened, the corners of the connecting plate are pressed and contracted from above and below by the locking pieces to support the supporting part. With the fulcrum as a fulcrum, expand both ends of the connecting plate in the vertical direction and press-fit into the groove. Bar member connector system ceiling, characterized in that the so that. 2. The bar material for a system ceiling according to claim 1, wherein a closing plate for hiding a space formed at a connecting portion of the intersecting bar members is integrally provided at an end portion of the bolt. Connector.